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Number Skills Practice Worksheet

Quantitative aptitude lesson 10: Practice: number skills · Set 860 · 40 questions
TalentJR

The method (Spot the type): Read the question and name the topic: HCF/LCM, fraction, ratio, percent … Use that lesson’s method and write each step. Check: is the answer sensible in size and units?

NameDateTime takenScore ___ / 40
  1. 1.Find the LCM of 10, 2 and 8.
  2. 2.10 + 3 × 4 − 4 =
  3. 3.The HCF of two numbers is 5 and their LCM is 50. One of the numbers is 25. What is the other number?
  4. 4.Round 91.79 to one decimal place. =
  5. 5.What is the smallest number you must take away from 749 so that it divides exactly by 6?
  6. 6.Find the HCF of 56 and 72.
  7. 7.Three temple bells ring every 5, 24 and 15 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  8. 8.35 − 54 ÷ 9 × 4 =
  9. 9.What percent of 20 is 16?
  10. 10.What is 1/3 of 9 kg?
  11. 11.Divide ₹506 between Sneha and Meera in the ratio 7 : 4. How much does Sneha get (in ₹)?
  12. 12.A car goes 70 km on 7 litres of petrol. How far can it go on 38 litres (in km)?
  13. 13.Diya takes 36 seconds and Zoya takes 48 seconds to run once round a track. They start together from the start line. After how many seconds will they first be at the start line together again?
  14. 14.Write 29/50 as a percent.
  15. 15.Which of these numbers divides exactly by 4? (a) 3468 (b) 2478 (c) 5753 (d) 5697
  16. 16.21.6 ÷ 6 =
  17. 17.20 + 8 × 2 − 9 =
  18. 18.(11 + 3) × 5 − 23 =
  19. 19.Which of these numbers divides exactly by 3? (a) 8404 (b) 3590 (c) 5468 (d) 8730
  20. 20.Which is closest to 704 + 505 + 605? (a) 1700 (b) 1900 (c) 2000 (d) 1800
  21. 21.Three temple bells ring every 4, 30 and 8 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  22. 22.5 : 9 = 25 : ?
  23. 23.A hostel has enough food for 11 students for 16 days. How many days will the same food last for 4 students?
  24. 24.Three temple bells ring every 20, 4 and 24 minutes. They ring together at 9:00 am. After how many minutes will they next ring together?
  25. 25.2/5 of 35 + 2 × 5 =
  26. 26.A hall floor is 175 cm long and 50 cm wide. It is covered with the largest square tiles that fit exactly. How many tiles are needed?
  27. 27.3/6 + 2/11 =
  28. 28.Round 61.47 to one decimal place. =
  29. 29.What is the smallest number you must take away from 258 so that it divides exactly by 13?
  30. 30.4/5 − 1/3 =
  31. 31.If 8 cricket balls cost ₹48, how much do 16 cricket balls cost (in ₹)?
  32. 32.Round 49.61 to one decimal place. =
  33. 33.What is the smallest number you must take away from 603 so that it divides exactly by 6?
  34. 34.Which is closest to 897 × 22? (Round each number first.) (a) 36000 (b) 18000 (c) 1800 (d) 180000
  35. 35.8.21 + 7.7 =
  36. 36.What is 1/4 of 120 km?
  37. 37.5/9 × 5/11 =
  38. 38.Which is closest to 3201 ÷ 39? (a) 40 (b) 160 (c) 800 (d) 80
  39. 39.A car goes 72 km on 8 litres of petrol. How far can it go on 40 litres (in km)?
  40. 40.Which is closest to 304 × 59? (Round each number first.) (a) 1800 (b) 18000 (c) 180000 (d) 36000

Answer key

  1. 40
  2. 18
  3. 10
  4. 91.8
  5. 5
  6. 8
  7. 120
  8. 11
  9. 80
  10. 3
  11. 322
  12. 380
  13. 144
  14. 58
  15. 3468
  16. 3.6
  17. 27
  18. 47
  19. 8730
  20. 1800
  21. 120
  22. 45
  23. 44
  24. 120
  25. 24
  26. 14
  27. 15/22
  28. 61.5
  29. 11
  30. 7/15
  31. 96
  32. 49.6
  33. 3
  34. 18000
  35. 15.91
  36. 30
  37. 25/99
  38. 80
  39. 360
  40. 18000

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